---
id: CVE-2026-82386
title: >-
  Improper Restriction of XML External Entity Reference in Apache Roller 6.1.5
  allows a weblog administrator to read files readable by the Roller process and
  reach internal network addresses by importing a crafted OPML document, because
  th…
summary: >-
  Improper Restriction of XML External Entity Reference in Apache Roller 6.1.5
  allows a weblog administrator to read files readable by the Roller process and
  reach internal network addresses by importing a crafted OPML document, because
  th…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-611
vendor: Apache Software Foundation
product: Apache Roller
affected:
  - apache_roller 6.1.5
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T09:17:06.843'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82386'
references:
  - url: 'https://github.com/apache/roller/pull/173'
    label: security@apache.org
  - url: 'https://lists.apache.org/thread/mrtstv8odj7l9mcrto445lftrcpw0sxl'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/25/19'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-28T08:05:44.643Z'
---

## Overview

Improper Restriction of XML External Entity Reference in Apache Roller 6.1.5 allows a weblog administrator to read files readable by the Roller process and reach internal network addresses by importing a crafted OPML document, because the bookmark import parser does not disable external entity resolution. No non-default configuration is required; the import is reached through the administrator bookmark-import action. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which uses a hardened parser that disables external entities and document type declarations.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.